Lockhandle



S. A. GUTMAN Jan. 8 1924.

LOCKHANDLE Filed Jan. 16

lNVENTOR 56 60/070 ATTORNEY Patented Jan. 8, 1924".

UNITED STATES SYLVESTER A. GUTMAN, OF FLINT, MICHIGAN;

. LOCKHANDLE.

Application filed January 16, 1922. Serial No. 529,484.

T 0 all whom it may concern.

Be it known that I, SYLvEsrnR A. GUT- MAN, a citizen of the United States, and a resident of Flint, county of Genesee, and State of Michigan, have invented a new and useful Lockhandle, set forth in the annexed specification.

My invention relates to lockhandlessuch as are used on automobile door and similar looks.

The object of my invention is an efficient, simple, and durable lockhandle produced in a highly economical manner.

The lockhandles of the present construction are composed of several parts mechanically secured to each other. Such construction requires considerable machine work, fitting, and assembling which is not only expensive but also produces an article which is not durable since the joints between the several members become loose due to the constant operation of the handle.

The lockhandle of the present invention has all of the qualities necessary for its proper operation, including the free rotation of the loose member, without being built up mechanically. I

An automobile door lockhandle, exemplifying the present invention, is shown in the accompanying drawings inwhich Fig. 1 is a general side view of such a lockhandle, partly broken away toshow the connection between the casting and the insert; Fig. 2 isan end view of Fig. 1; Fig. 3 is a perspective view of an insert; Fig. 4 is a general section of a mold ready to cast the lockhandleshown in Figs. 1 and 2; Fig. 5 isv a general side View of a modified lockhandle, partly broken away to show connection between the casting and'two inserts; and Fig. 6 is a general section of a mold ready to cast the lockhandle shown in Fig. 5.

Similar reference characters refer to similar parts throughout the views.

The lockhandle, selected to illustrate the present invention and shown in Figs. 1 and 2, is composed of the body A and the rotatable insert or plate B.

The body A. is made of cast metal in a manner which will be described presently and is provided with the handle 10, the neck 11, the shoulders 12 and 13, the collar 14:, and the square or key portion 15 which is adapted to enter and operate a lock.

The member B is, preferably, made of material of a tough nature, not brlttle, and

preferably formed oblong asshown iii-Fig. 3 and provided with the central opening: 16 and the openings 17 to receive screws whereby the part B is fastenedto the look or other support as onv an automobile door'} for instance. I I 1 When this lockhandleis applied inpractice, the member B becomes the stationary member and the body A is journaled there- 1n.

In order to produce these articles in the most economical manner, they .must be pro duced in quantities and by elimination of all possible work and parts. which is accomplished by the novel method of casting hereinat'ter described and by the construction'of the member B which must be fastened" to either fiat or irregularly formed surfaces and is therefore made of flat and rather thin and tough material so that it may. be bent to suit any contour upon which it may be fastened. With the present invention, the" member B can be made of one form. for all locks whereby considerable expense of dies and tools as well as production cost is eliminated.

Since it is necessary that the. member A rotate in the member B and that the member A must hold the member B in position longi tudinally without additional mechanical or auxilliary means, special provisions must be made when casting the body A.

A preferred method of so casting the body A consists ofmaking a, pattern which conforms to the outline of the entirelockhandle as shown in Figs. 1 and 2.. Then make a moldwith this pattern infthe usual manner well known in foundry practice. After the pattern is'removed from the mold, thelmeirn ber Bfis placed into this mold, s imilar.to a core in an ordinary casting which procedure is also well known in lV practice A section of the mold, at this stage of the proceeding, is shown in Fig. 4. Then pour molten metal into this mold whereupon, after cooling, the member B is held longitudinally on the body A by the shoulders 12 and 13. Usually, after the member A. is so cast, the member B can rotate thereon due to the fact that the cast metal in the opening 16 shrinks away from the wall of this opening and permits such rotation; and the distance between the houlders 12 and 13 is so short that the shrinkage therebetween amounts to very little.

In some instances it may be found that the member B does stick to the body A after casting. This condition is not serious and is readily overcome by forcefully rotating the member B on the member A a few times which operation relieves the members and provides a Working clearance.

This tendency of sticking may also be overcome by applying a relieving agent, such as graphite, on the wall of the opening 16 and on the sides of the member B adjacent the opening 16, before it is placed in the mold. This relieving agent Will prevent the metal of the body A from sticking to the member B and provide the necessary work- 111 clearance.

ince the square portion 15 is subject to considerable wear in Some instances, and

since the handle 10 and the neck 11 are, preferably, made of soft material, the square portion 15 may be made of material harder than the other parts which material may also have the property of being hardened.

Such an arrangement is shown in Fi s. 5 and 6 Where the lockhandle consists of the body C, the end D, and the loose member B Which is a duplicate of the one shown in Fig. 3 and described in connection with Figs. 1 and 2 The body C is cast similar to the body A previously described and has the handle 10, the neck 11, and the shoulder 18.

The end D has the square portion 19, the collar 20, the projection 21 provided with corrugations 22, and the shoulder This end D is made of rather hard material, preferably a ferro or such material which can be hardened, and may be made economically either by the drop forge or casting process and the end 19 may be hardened if desired.

The method of roducing this lockhandle is similar to the one previously described except that the end D is also placed into the mold similar to a core. Fig. 6 shows a section through such a mold with the members B and D in place and ready for pouring.

After casting, the handle 10 and the neck 11 will firmly shrink upon the projection 21 since the material of the neck 11 completely surrounds the end of this projection and firmly hold the end D to the handle C due to the corrugations while the member B will rotate on the projection 21 but will be held in position longitudinally by the shoulders 18 and 23.

This last method, like the first one, also produces a one piece body since the portions thereof are united in such a manner that they can not be separated without destroying one or the other of the elements thereof.

In case stickage is encountered between the members B and G or D, the same can be remedied by the expedients previously setforth.

It will be seen that the present invention provides an inexpensive, durable, simple, and efficient lockhandle and a decided step to advance the art due to the very large quantities of such articles used every day.

The illustration shown and described is only an exemplification of the present invention and is susceptible to modifications as to article and method and application within the scope of the claims.

Therefore, Without limiting myself to the precise construction shown and described,

I claim 1. An article of the character described, comprising, a one piece body provided with a groove, and a rotatable member journaled in the bottom of said groove and confined endwise by the walls of said groove.

2. A lockhandle, comprising, a one piece body composed of a handle portion and a lock operating portion and provided with a groove, and a support member journaled in the bottom of said roove and confined endwise by the walls of said groove.

3. A lockhandle, comprising, a body provided with a groove, and a support member journaled in the bottom of said groove and confined endWise by the walls of said groove; said body composed of a handle portion of soft material and a lock operating portion of harder material, and both of said portions permanently united as a one piece body.

SYLVESTER A. GUTMAN.v 

